Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...231l..15c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 231, no. 2, May 1990, p. L15-L18. Research supported by CICYT.
Astronomy and Astrophysics
Astrophysics
77
Interstellar Masers, Stellar Envelopes, Water Masers, H Ii Regions, Microwave Spectra, Molecular Clouds, Rotational Spectra
Scientific paper
The IRAM 30-m telescope was used to observe the emission of the 183 GHz 3(13)-2(20) rotational transition of water from a selected sample of giant molecular clouds, low mass star forming regions and evolved stars. The zenith atmospheric transmission was 25-30 percent during the observations. The water emission shows strong and narrow masing lines (flux = about 1000-15000 Jy) toward the hot molecular clouds with strong 22 GHz water masers. Broad line emission, perhaps of thermal origin, is found in the sources associated with molecular outflows. Double peaked profiles, corresponding to masing lines (flux = about 100-600 Jy), are observed toward the evolved stars. Finally, 183 GHz maser emission is also observed in the more quiescent clouds, but at velocities different from those of the associated 22 GHz masers.
Cernicharo Jose
Garcia Paulo
Hein H.
John Daniel
Mattioco F.
No associations
LandOfFree
Detection of 183 GHz water vapor maser emission from interstellar and circumstellar sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Detection of 183 GHz water vapor maser emission from interstellar and circumstellar sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of 183 GHz water vapor maser emission from interstellar and circumstellar sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-778975